Regenerate Encryption Keys fails

Dear Devolutions server support,
we are trying to upgrade our DVLS from version 2019.1.20.0 towards 2021.2.10.0. After the upgrade some users lost their private faults and the following error was logged:
DevolutionsCryptoException - NativeError : InvalidSignature
===Original Message===
Exception of type 'Devolutions.Cryptography.DevolutionsCryptoException' was
thrown. ===Original StackTrace===
   at Devolutions.Cryptography.Utils.HandleError(Int64 errorCode)
   at Devolutions.Cryptography.Managed.Decrypt(Byte[] data, Byte[] key, ILegacyDecryptor legacyDecryptor)
   at Devolutions.Cryptography.Managed.DecryptWithKeyAsUtf8String(String b64data, Byte[] key, ILegacyDecryptor legacyDecryptor)
   at Devolutions.Server.ConnectionManager.DecryptDataAtRest(Guid contextId, String value, String context)
User Vault: c870fa2a-6775-4d6f-bb82-f7d6eb45283b, Data: ndSvXryez/9EPklKxj8TFAILVDn...
I read a similar issue here on the forum and the solution was to regenerate the encryption keys.
I am now trying the genereate the encryption keys via DPS console v 2021.2.14.0 for the DVLS version 2019.1.20.0 (not yet upgrade). While doing so it get the following message: Regenerating encryption keys...
Invalid column name 'ConsoleInfo'.
Stopping Application Pool...
Stopping scheduler service...
Logging off all sessions...
Creating new encryption config...
ReEncrypting PAM Credentials...
Invalid column name 'EncryptedSudoPassword'.
Invalid column name 'EncryptedOtpSettings'.
Encryption Keys Regeneration failed. Please manually restore the database and restart the app pool and scheduler service.

How can i resolve this issue?